Greg Whalin wrote:
What drives are you using? For SCSI RAID, you definitly want deadline scheduler. That said, even after the switch to deadline, we saw our Opteron's running way slow (compared to older slower Xeons). Whatever the problem is, we fought it for quite a while (though difficult to test too much w/ production dbs) and ended up rolling back to 2.4.
Ug.. I don't want to roll back to 2.4... 2.6 has so many nice features we depend on. We're using SCSI RAID5 on XEON of course.
I think its time to rule out some things. I'm going to migrate to RAID1... just to verify... then try reviewing our kernel options.. maybe disabling NPTL... maybe try another filesystem...
Not fun.
For the record... no a loaded system what type of IO do you guys see? Anywhere near full disk capacity? I'm curious to see what type of IO people are seeing on a production/loaded mysql box.
Kevin
--
Use Rojo (RSS/Atom aggregator)! - visit http://rojo.com. See irc.freenode.net #rojo if you want to chat.
Rojo is Hiring! - http://www.rojonetworks.com/JobsAtRojo.html
Kevin A. Burton, Location - San Francisco, CA
AIM/YIM - sfburtonator, Web - http://peerfear.org/
GPG fingerprint: 5FB2 F3E2 760E 70A8 6174 D393 E84D 8D04 99F1 4412
-- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
